A349339 Odd bisection of the Möbius transform of A126760.

1, 0, 1, 2, 0, 3, 4, 0, 5, 6, 0, 7, 7, 0, 9, 10, 0, 8, 12, 0, 13, 14, 0, 15, 14, 0, 17, 14, 0, 19, 20, 0, 16, 22, 0, 23, 24, 0, 20, 26, 0, 27, 22, 0, 29, 24, 0, 24, 32, 0, 33, 34, 0, 35, 36, 0, 37, 30, 0, 32, 37, 0, 33, 42, 0, 43, 36, 0, 45, 46, 0, 40, 38, 0, 49, 50, 0, 40, 52, 0, 44, 54, 0, 55, 52, 0, 57, 40, 0, 59

Offset: 1

Author

Antti Karttunen, Nov 16 2021

Keywords

• nonn

Crossrefs

Cf. A126760, A347233.

Cf. also A072451 (the odd bisection of the Möbius transform of A003602).

Programs

PARI

A126760(n) = {n&&n\=3^valuation(n, 3)<A126760
A347233(n) = sumdiv(n,d,moebius(n/d)*A126760(d));
A349339(n) = A347233(n+n-1);

Formula

a(n) = A347233(2*n-1).